5f18b76bf7fe7eca67a9741e81b8649a014d48d796cfef811ef6a2c0b60a0a99

Analysis

max time kernel
147s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
04-01-2024 02:46

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General

Target

3fb15850a3b5a2f9d00e4c9c8b74b930.exe
Size

142KB
MD5

3fb15850a3b5a2f9d00e4c9c8b74b930
SHA1

52cd3da9e8a8e5130cefb8c03b7d8d427630712d
SHA256

5f18b76bf7fe7eca67a9741e81b8649a014d48d796cfef811ef6a2c0b60a0a99
SHA512

f05da6e6c599dfd240afa0ba33851e3b116a7ecc2e9eb20f653b9333142bfebbea6501e6414455bef239f5a24bd95f2bcd2839c4ff633d71c158133d95a70178
SSDEEP

3072:CnOn7t7XpdpCCTg/sxFgJKeqgKJ+BCGCUFb1zF5IvJtt855Hdo:CKpdcCrTdgKzUFblPI7edo

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4580	downloadmr.exe

Loads dropped DLL 2 IoCs

pid	Process
4612	3fb15850a3b5a2f9d00e4c9c8b74b930.exe
4612	3fb15850a3b5a2f9d00e4c9c8b74b930.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4580	downloadmr.exe
4580	downloadmr.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4612 wrote to memory of 4580	4612	3fb15850a3b5a2f9d00e4c9c8b74b930.exe	23
PID 4612 wrote to memory of 4580	4612	3fb15850a3b5a2f9d00e4c9c8b74b930.exe	23
PID 4612 wrote to memory of 4580	4612	3fb15850a3b5a2f9d00e4c9c8b74b930.exe	23

C:\Users\Admin\AppData\Local\Temp\3fb15850a3b5a2f9d00e4c9c8b74b930.exe
"C:\Users\Admin\AppData\Local\Temp\3fb15850a3b5a2f9d00e4c9c8b74b930.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4612
- C:\Users\Admin\AppData\Local\Temp\nsi425A.tmp\downloadmr.exe
  C:\Users\Admin\AppData\Local\Temp\nsi425A.tmp\downloadmr.exe /u4d488269-6268-4c29-b4c2-79305bc06ebe /e59442
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:4580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsi425A.tmp\System.dll

Filesize
21KB

MD5
5ebc73650256e9c8ddbcda231db829a1

SHA1
988d4535e18754ab2a6248abae96c5697d7dbcd5

SHA256
1eaa543842df7795404184e8892a1654b0773dbc9bd8b54c7fdb9e68f4355493

SHA512
b21266e76fc7263af982a1336a766e47ccf348ed56b305dbb09f03574c9b2a7309f12200e80d86f9a251381be6e87a41206447f11c51899cb31fba10da1d5270

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsi425A.tmp\downloadmr.exe

Filesize
122KB

MD5
da254a8488b60244654e1cf4d6796cf8

SHA1
23d06f4589786652a3a226b5012a5520a3d03452

SHA256
6d3b82a7ad74a1e88ae4d0f9176082130f1558fb3ff42a8b45ca8b80445efc2d

SHA512
d311f90ad65441f6c7ae55220c2c3f117aa7601d083e6847e1b58b96c3c332d68a25d445310818396dc88678fb9ec5356f35a04a392c3d23746a2231e14b0a2e

Download Submit
memory/4580-14-0x0000000001320000-0x0000000001330000-memory.dmp

Filesize
64KB

Download
memory/4580-15-0x0000000073FC0000-0x0000000074571000-memory.dmp

Filesize
5.7MB

Download
memory/4580-13-0x0000000073FC0000-0x0000000074571000-memory.dmp

Filesize
5.7MB

Download
memory/4580-17-0x0000000001320000-0x0000000001330000-memory.dmp

Filesize
64KB

Download
memory/4580-16-0x0000000001320000-0x0000000001330000-memory.dmp

Filesize
64KB

Download
memory/4580-18-0x0000000001320000-0x0000000001330000-memory.dmp

Filesize
64KB

Download
memory/4580-20-0x0000000073FC0000-0x0000000074571000-memory.dmp

Filesize
5.7MB

Download
memory/4612-24-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download